Pneumatic vehicle tire

Abstract

A pneumatic vehicle tire is provided. The tire includes a tread, an inner surface lying opposite the tread, a self-sealing sealant and a sound-absorbing open-cell foam ring arranged inside the pneumatic vehicle tire. The foam ring is adhesively attached to the inner surface and adheres to the self-sealing sealant which is applied before the sound-absorbing open-cell foam ring is attached to the inner surface. The self-sealing sealant has, at least immediately after being applied, a tackiness required for an adhesive attachment of the sound-absorbing open-cell foam ring. A closed-cell material ring is arranged between the sound-absorbing foam ring and the self-sealing sealant to prevent a diffusion of the sealant into the open-cell foam ring. The closed-cell material ring effects an airtight condition.

What is claimed is: 
     
       1. A pneumatic vehicle tire comprising:
 an inner surface; 
 a tread; 
 a self-sealing sealant on said inner surface; 
 a sound-absorbing open-cell foam ring arranged inside the pneumatic vehicle tire and being adhesively attached to said inner surface opposite from said tread; 
 said sound-absorbing open-cell foam ring adhering to said self-sealing sealant; 
 said self-sealing sealant being applied on said inner surface before said sound-absorbing open-cell foam ring is attached to said inner surface; 
 said self-sealing sealant having, at least immediately after being applied, a tackiness required for an adhesive attachment of said sound-absorbing open-cell foam ring; 
 a closed-cell material ring arranged between said sound-absorbing foam ring and said self-sealing sealant; and, 
 said closed-cell material ring lying directly on said self-sealing sealant to provide an airtight seal. 
 
     
     
       2. The pneumatic vehicle tire of  claim 1 , wherein said closed-cell material ring includes at least one of a foam, a cork, an elastomer, or a combination thereof. 
     
     
       3. The pneumatic vehicle tire of  claim 1 , further comprising:
 an adhesive; and, 
 said closed-cell material ring and said open-cell foam ring being bonded to one another by said adhesive. 
 
     
     
       4. The pneumatic vehicle tire of  claim 1 , wherein said closed-cell material ring has a maximum radial thickness of ≤50 mm. 
     
     
       5. The pneumatic vehicle tire of  claim 1 , wherein said closed-cell material ring has a maximum radial thickness of 20 mm to 40 mm. 
     
     
       6. The pneumatic vehicle tire of  claim 1 , wherein said open-cell foam ring has a radial thickness of ≥10 mm. 
     
     
       7. The pneumatic vehicle tire of  claim 1 , wherein said open-cell foam ring has a radial thickness of 20 mm to 40 mm. 
     
     
       8. The pneumatic vehicle tire of  claim 1 , wherein said self-sealing sealant is a polyurethane gel. 
     
     
       9. The pneumatic vehicle tire of  claim 1 , wherein said self-sealing sealant is a viscous mixture based on butyl rubber, a polybutene or is based on silicone. 
     
     
       10. The pneumatic vehicle tire of  claim 1 , wherein:
 said closed-cell material ring has a first width, a radially outer surface and a radially inner surface; 
 said open-cell foam ring has a second width and a radially inner surface; 
 said closed-cell material ring lies with said radially outer surface fully flush on said self-sealing sealant; 
 said closed-cell material ring lies with said radially inner surface fully flush on said open-cell foam ring; and, 
 said first width of said closed-cell material ring being equal to said second width of said open-cell foam ring. 
 
     
     
       11. The pneumatic vehicle tire of  claim 1 , wherein:
 said closed-cell material ring has a radially inner surface and radially outer surface, wherein said radially outer surface is divided; 
 said closed-cell material ring lies with said radially inner surface fully flush on said open-cell foam ring; 
 said open-cell foam ring is supported together with said closed-cell material ring on said self-sealing sealant by two or more supports; 
 said open-cell foam ring has a width; and, 
 said closed-cell material ring has a width being equal to said width of said open-cell foam ring. 
 
     
     
       12. The pneumatic vehicle tire of  claim 1 , wherein:
 said self-sealing sealant is a sealant ply and has a layer thickness; 
 said layer thickness of said self-sealing sealant is ≤2 mm in a first region in which said closed-cell material ring lies directly on said self-sealing sealant; and, 
 said layer thickness of said self-sealing sealant is between 2 mm and 6 mm in a second region in which said closed-cell material ring does not lie directly on said self-sealing sealant. 
 
     
     
       13. The pneumatic vehicle tire of  claim 1 , wherein:
 said self-sealing sealant is a sealant ply and has a layer thickness; 
 said layer thickness of said self-sealing sealant is ≤1 mm in regions in which said closed-cell material ring lies directly on said self-sealing sealant; and, 
 said layer thickness of said self-sealing sealant is <5 mm in a second region in which said closed-cell material ring does not lie directly on said self-sealing sealant. 
 
     
     
       14. The pneumatic vehicle tire of  claim 11 , wherein said two or more supports are continuously arranged in a circumferential direction of the pneumatic vehicle tire or in a direction at an angle to the circumferential direction of the pneumatic vehicle tire. 
     
     
       15. The pneumatic vehicle tire of  claim 11 , wherein said two or more supports are discontinuously arranged in a circumferential direction of the pneumatic vehicle tire or in a direction at an angle to the circumferential direction of the pneumatic vehicle tire.